#url_dictonary = {'글쓰기'=>'http://knusys6.knu.ac.kr/knu/owa3/sylla_f.lst?t_gubun=3&t_query1=1',
#  '실용영어'=>'http://knusys6.knu.ac.kr/knu/owa3/sylla_f.lst?t_gubun=3&t_query1=2'}
#print url_dictonary

#print "This is a string".gsub(/ /,'')

a = ['a','b','c']
a.push('d')

print a
